FDA pregnancy category C. It is not known whether interferon alfa-n3 is harmful to an unborn baby. Before using this medication, tell your doctor if you are pregnant or plan to become pregnant during treatment.

It is not known whether interferon alfa-n3 passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Interferon alfa-n3 is made from human plasma (part of the blood) and may contain viruses and other infectious agents that can cause disease. Although donated human plasma is screened, tested, and treated to reduce the risk of it containing anything that could cause disease, there is still a small possibility it could transmit disease. Talk with your doctor about the risks and benefits of using this medication.

How is interferon alfa-n3 given?

Interferon alfa-n3 is injected directly into each genital wart lesion. You will receive this injection in a clinic setting.

Interferon alfa-n3 injections are usually given 2 times per week for up to 8 weeks.

Your lesions may only partially clear up by the end of your 8-week treatment. However, you may continue to notice improvement even after your treatment ends.

Tell your doctor if your warts do not completely clear up within 3 months after your last injection of interferon alfa-n3.

To reduce or prevent certain side effects, your doctor may recommend you take acetaminophen (Tylenol) at the time of your interferon alfa-n3 injections. Follow your doctor's instructions about the correct dose.

What happens if I miss a dose?

Call your doctor for instructions if you miss an appointment for your interferon alfa-n3 injection.

What happens if I overdose?

Seek emergency medical attention if you think you have received too much of this medicine.

Symptoms of an interferon alfa-n3 overdose are not known.

What should I avoid while receiving interferon alfa-n3?

Avoid drinking alcohol if you are also taking acetaminophen (Tylenol) while being treated with interferon alfa-n3.

What are the possible side effects of interferon alfa-n3?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; chest tightness, wheezing, feeling like you might pass out; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have flu symptoms such as fever, chills, and body aches.

Less serious side effects may include:

headache, tired feeling;

dizziness;

joint or muscle pain, back pain;

mild nausea; or

sleep problems (insomnia).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect interferon alfa-n3?

There may be other drugs that can interact with interferon alfa-n3. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Where can I get more information?

Your doctor or pharmacist can provide more information about interferon alfa-n3.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use and Privacy Policy. Learn how we develop our content.

Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

Disclaimer: The information contained in this website, and its associated websites, is provided as a benefit to the local community, and the Internet community in general; it does not constitute medical advice. We try to provide quality information, but we make no claims, promises or guarantees about the accuracy, completeness, or adequacy of the information contained in or linked to this website and its associated sites. As medical advice must be tailored to the specific circumstances of each patient and healthcare is constantly changing, nothing provided herein should be used as a substitute for the advice of a competent physician. Furthermore, in providing this service, Adventist HealthCare does not condone or support all of the content covered in this site. As an Adventist health care organization, Adventist HealthCare acts in accordance with the ethical and religious directives for Adventist health care services.